CiteScore:
4.12ℹCiteScore:2017: 4.120CiteScore measures the average citations received per document published in this title. CiteScore values are based on citation counts in a given year (e.g. 2015) to documents published in three previous calendar years (e.g. 2012 – 14), divided by the number of documents in these three previous years (e.g. 2012 – 14).

Impact Factor:
3.708ℹImpact Factor:2017: 3.708The Impact Factor measures the average number of citations received in a particular year by papers published in the journal during the two preceding years.
2018 Journal Citation Reports (Clarivate Analytics, 2019)

5-Year Impact Factor:
4.042ℹFive-Year Impact Factor:2017: 4.042To calculate the five year Impact Factor, citations are counted in 2017 to the previous five years and divided by the source items published in the previous five years.
2018 Journal Citation Reports (Clarivate Analytics, 2019)

Source Normalized Impact per Paper (SNIP):
1.451ℹSource Normalized Impact per Paper (SNIP):2017: 1.451SNIP measures contextual citation impact by weighting citations based on the total number of citations in a subject field.

SCImago Journal Rank (SJR):
1.523ℹSCImago Journal Rank (SJR):2017: 1.523SJR is a prestige metric based on the idea that not all citations are the same. SJR uses a similar algorithm as the Google page rank; it provides a quantitative and a qualitative measure of the journal’s impact.

Author StatsℹAuthor Stats:Publishing your article with us has many benefits, such as having access to a personal dashboard: citation and usage data on your publications in one place. This free service is available to anyone who has published and whose publication is in Scopus.

Impact of exposure to particulate matter in Asian transport microenvironments

The World Health Organization estimates that outdoor air pollution caused 3.7 million deaths in 2012 in low- and middle-income Asian countries. However, this doesn’t account for the higher exposures of specific particulate matter (PM) components – including fine particles (PM2.5), ultrafine particles (UFP) and black carbon (BC) – that are typical of transport microenvironments (TMEs).

With the rapidly growing number of on-road vehicles in Asia, human exposure to PM is an increasing concern. But relatively few studies have been carried out in urban Asian TMEs where PM2.5, UFP and BC had generally higher concentrations compared to Europe and the US.

A review article in the journal Atmospheric Environment (August 2018) assesses previous studies of PM2.5, UFP and BC in Asian TMEs in order to better understand the extent of exposure, the underlying factors leading to exposure, and how Asian exposures compare to those found in Europe and the US. The authors are with the University of Surrey in the UK/Trinity College Dublin in Ireland, Health Effects Institute and Tufts University in Massachusetts, and North Carolina State University.

Based on available data, PM2.5 concentrations while walking were 1.6 and 1.2 times higher in Asian cities (average 42 µg/m3) compared to cities in Europe (26 µg/m3) and the US (35 µg/m3), respectively. Likewise, average PM2.5 concentrations in car (74 µg/m3) and bus (76 µg/m3) modes in Asian cities were approximately two to three times higher than in Europe and US cities.

UFP exposures in Asian cities were twice as high for pedestrians, and up to ∼9 times as high in cars, than in cities in Europe or the US. Asian pedestrians were exposed to ∼7 times higher BC concentrations compared with pedestrians in the US.

Stochastic population-based models have yet to be applied widely in Asia, but they can be used to quantify inter-individual and inter-regional variability in exposures and to assess the contribution of TMEs to total exposures for multiple pollutants. The review also highlights specific gaps in the Asian TME data set that need to be filled, such as UFP and BC studies, and pedestrian and cyclist exposure.